With the advent of the aging population, the physical and mental health of the elderly is receiving more and more attention from society, the improvement of the quality of life of the elderly is not only the affluence of life materials, spiritual comfort, but also need to care about their “sexual” well-being. Most older people are sexually conservative, ashamed to say, long-term physical unsatisfied, over time will cause mental and psychological disorders, is often a signal of certain diseases. So, why do the elderly need ” sexual ” happiness? First of all, from the physiological point of view, the normal and moderate satisfaction of human sexual desire is an important condition to ensure the physical and mental health of individuals. Although with age, human testes will have blood supply disorders, as shown in the diameter of the varicocele shrinks, the spermatogenic epithelium becomes thinner, spermatogenesis gradually weakened, connective tissue components grow, white membrane thickening, varicocele boundary membrane fibrosis, intertubular tissue fibrosis, interstitial cells often have degeneration, but the overall degenerative changes are not very obvious, testicular volume can be maintained at least until the age of 64 without The testicular volume can be maintained until at least 64 years of age without significant atrophy. Therefore, the decline of biologically active testosterone in the elderly is not very obvious, and some studies have shown that the concentration of serum testosterone in men decreases significantly only at the age of 60, and reaches its lowest level only at the age of 75-85. At the same time, coupled with their rich sexual experience in the past can often make sexual function continue to maintain a long time, there are studies show that even after the loss of testicles in adult men, their sexual ability will not disappear soon. Secondly, from a psychological point of view, the realization of sexual desire accompanied by sexual pleasure can bring psychological satisfaction, strong abstinence can lead to a painful experience of the mind, manifested as a mental trance, sexual misbehavior, and then physical symptoms, such as insomnia, nightmares, dizziness, dizziness, memory loss, gastrointestinal discomfort, etc. From a psychological point of view, men who have been abstinent for a long time and use their reason to suppress their sexual impulses may suffer from certain diseases of the reproductive system, such as prostate enlargement and prostatitis, which affect human health. Once again, pathologically speaking, the sudden decline in sexual ability of older men may indicate that certain diseases have eroded their bodies, such as metabolic syndrome p diabetes p hypertension, late-onset hypogonadism and other common diseases of old age. At this time should be more attention, but most older people talk about ” sex “, often miss the disease. In summary, the elderly need ” sexual ” happiness, not only is the physical needs, spiritual and psychological satisfaction and pleasure, but also early detection of certain elderly sexual diseases, to facilitate early diagnosis and treatment.